题目内容
17.So far,hehas learned(learn )English for six years.分析 到目前为止,他已经学英语学了六年了.
解答 答案:has learned.
句中的时间状语"for+时间段"是现在完成时的标志,现在完成时的构成是:主语+have/has+动词的过去分词; 故答案为has learned.
点评 本题考查用所给单词的适当形式填空,首先要根据语境明确句意,然后再根据相关语法对所给单词在形式上做出正确的变化.
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